How do I begin debugging where the description meta tag is set for my categories?

in seo.php in the custom folder line 73

global $suf_seo_meta_description, $wp_query;
if (is_home()) {
    $description = $suf_seo_meta_description;
}
else if (is_singular()) {
    $description = suffusion_get_post_meta($wp_query->post->ID, "suf_meta_description", true);
    if (empty($description)) { // Check the old meta field
        $description = suffusion_get_post_meta($wp_query->post->ID, "meta_description", true);
    }
    if (empty($description) && is_front_page()) {
        $description = $suf_seo_meta_description;
    }
}
else if (is_category() || is_tag() || is_tax()) {
    $description = term_description('', get_query_var('taxonomy'));
}
else if (is_author()) {
    $description = get_the_author_meta('description', get_query_var('author'));
}
if (!empty($description)) {
    $description = stripslashes($description);
    $description = strip_tags($description);
    $description = str_replace(array("\r", "\n", "\t"), '', $description);
    $description = "\t".'<meta name="description" content="' . $description . '" />' . "\n";
    echo $description;
}